“I mean, like, when I won the presidency, at least my side felt pretty good. It tells you something interesting, that even the folks in charge are still mad, because they’re getting ginned up to be mad."

"Why is it that the folks that won the last election are so mad all the time?" former Pres. Obama asks at Miami rally.

Anger in the electorate has been a running theme throughout politics, with politicians interrupted at dinners by liberal protestors and both sides spouting anger on social media.

In the last two weeks, fear about anger turning into violence has escalated after a man killed 11 people at a synagogue in Pittsburgh. The suspect had expressed anti-Semitic sentiment online and had also criticized the U.S. acceptance of refugees.

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Another man has been charged with crimes related to the delivery of mail bombs to prominent Democrats who have spoken out against Trump.

His visit came as he tours the nation in an effort to whip up support for Democratic candidates ahead of Tuesday's midterms. He's made stops in states such as Nevada, Pennsylvania and Wisconsin, among others.